Abstract: A system, apparatus, and related method for receiving and correlating Manchester encoded data signals includes a receiver for receiving 1090ES/ADS-B or other Manchester encoded signals. A sampler extracts and oversamples data strings from the received signals. Sample correlators compare the oversampled data strings to oversampled versions of each possible pattern for the extracted data string and determine a score indicating how closely the possible pattern (or its oversampled counterpart) matches the extracted data string (or its oversampled version) on a bitwise or symbolwise basis. The system outputs correlated and decoded data string most closely matching the extracted data string based on the set of determined scores.

Abstract: Systems and methods for tracking a subject using an unmanned aerial vehicle (UAV) are disclosed. An unmanned aerial vehicle (UAV) includes an onboard camera to capture/stream multiple images. An onboard visual recognition module isolates image elements by analyzing the captured images, and determines whether the image elements correspond or do not correspond to the subject. Current image elements corresponding to a subject are stored in a positive database, and non-corresponding current image elements are stored in a negative database. An onboard subject tracking module defines the chosen subject, determines attributes of the subject based on comparisons of image elements, and follows the subject by directing the attitude control system to adjust the velocity and orientation of the UAV based on the determined attributes.

Abstract: Provided herein is a probe for ultrasound imaging of tissue. The probe comprises an optical relay having an optically absorbing coating at the distal end of the probe for generating ultrasound from excitation light via the photoacoustic effect, wherein the generated ultrasound propagates as an ultrasound beam into the tissue; and an ultrasound receiver separate from the optical relay. The optical relay is configured to receive as input a time-varying spatial pattern of excitation light at the proximal end of the probe and to transmit the excitation light to the distal end of the probe to illuminate the optically absorbing coating in accordance with said time-varying spatial pattern, thereby generating ultrasound from the excitation light via the photoacoustic effect to propagate as a scanning ultrasound beam into the tissue. The ultrasound receiver is configured to receive reflections of the ultrasound from tissue. Such an ultrasound probe may be incorporated, for example, into a transseptal puncture needle.

Abstract: An action camera system for an unmanned aerial vehicle (UAV) selects a target based on a reference image captured by an onboard camera. Image processing determines a desired orientation of the target to the UAV, by which the UAV can track the target and provide streaming video images from the desired orientation. Image processing establishes a visual lock on the target and controls the UAV to maintain the desired orientation while capturing streaming images. Additional position data provided by sensors aboard a smartphone carried by the target enhances the tracking ability of the action camera system and enables predictive analysis of the target's future position. The action camera system may additionally provide preselected modes of operation that control UAV movement and image capture depending on the user's desired objectives.

Abstract: A gimbal-assisted continuous-wave (CW) Doppler radar detection system mountable to an unmanned aircraft system may be rotated in three degrees of freedom relative to the UAS to provide targeted multidirectional obstacle detection by transmitting CW signals throughout a field of view and analyzing reflected signals from obstacles within the field of view. The radar assembly may be articulated to provide track-ahead detection in anticipation of a heading or altitude change of the UAS, to center on a detected obstacle in order to classify or identify it more clearly. The radar assembly may be rotated below the UAS and its field of view changed to increase breadth and accuracy at a shorter effective range, in order to determine real-time altitude or terrain data while the UAS executes a landing.

Abstract: Systems and methods for tracking a subject using an unmanned aerial vehicle (UAV) are disclosed. An unmanned aerial vehicle (UAV) includes an onboard camera to capture/stream multiple images. An onboard visual recognition module isolates image elements by analyzing the captured images, and determines whether the image elements correspond or do not correspond to the subject. Current image elements corresponding to a subject are stored in a positive database, and non-corresponding current image elements are stored in a negative database. An onboard subject tracking module defines the chosen subject, determines attributes of the subject based on comparisons of image elements, and follows the subject by directing the attitude control system to adjust the velocity and orientation of the UAV based on the determined attributes.

Abstract: Example implementations may relate to an obstacle detection system. In particular, an example device may include a light emitter, a line-image sensor, and a controller that are mounted on a rotatable component. In an example embodiment, the line-image sensor may receive light signals emitted from the light emitter. The controller may be communicatively coupled to the light emitter and line-image sensor and configured to determine a multipath signal based on the time of flight of the light signal and the position along the line-image sensor at which the line-image sensor received the given reflected light signal.

Abstract: Example implementations may relate to an obstacle detection system. In particular, an example device may include a light emitter, a line-image sensor, and a controller that are mounted on a rotatable component. In an example embodiment, the line-image sensor may receive light signals emitted from the light emitter. The controller may be communicatively coupled to the light emitter and line-image sensor and configured to determine a multipath signal based on the time of flight of the light signal and the position along the line-image sensor at which the line-image sensor received the given reflected light signal.

Abstract: Systems and methods for simultaneously capturing live audio and video feeds and reducing motor/rotor noise associated with the video feed for a multirotor unmanned aerial vehicle (UAV). Noise reduction occurs in real time or near real time as one or more frequencies associated with a motor, rotor, or attitude of the UAV are recognized, subtracted and/or dithered from the audio feed, resulting in one or more correction signals. The one or more correction signals may be dynamically summed in order to generate a corrected audio feed for transmission.

Abstract: Example implementations may relate to an obstacle detection system. In particular, an example device may include a light emitter, a line-image sensor, and a controller that are mounted on a rotatable component. In an example embodiment, the line-image sensor may receive light signals emitted from the light emitter. The controller may be communicatively coupled to the light emitter and line-image sensor and configured to determine a multipath signal based on the time of flight of the light signal and the position along the line-image sensor at which the line-image sensor received the given reflected light signal.

Abstract: Systems and methods for stabilizing the steering and throttle of a radio-controlled (RC) vehicle are described herein. More specifically, sensors and circuitry are configured to control the wheel speed and wheel direction of a RC vehicle based on rotational information. In operation, one or more sensors may be configured to receive angular rotational information associated with a rotation of the RC vehicle. The rotational information may define a rotation of the RC vehicle around one or more axes of the RC vehicle. The circuitry may be configured to receive the angular rotation information associated with the rotation of the RC vehicle from the one or more sensors, and control a wheel speed and/or a wheel direction of at least one wheel of the RC vehicle based at least in part on (i) command data received from a controller associated with the RC vehicle and (ii) the received angular rotation information.

Abstract: Systems and methods for controlling servomotors are described herein. Servomotor controllers and related control circuitry are configured to generate control signals for controlling the servomotor. The control signals include directional control signals to control the rotational direction and position of the servomotor, and power control signals control the rotational speed and/or torque of the servomotor.

Abstract: Example implementations may relate to an obstacle detection system. In particular, an example device may include a light emitter, a line-image sensor, and a controller that are mounted on a rotatable component. In an example embodiment, the line-image sensor may receive light signals emitted from the light emitter. The controller may be communicatively coupled to the light emitter and line-image sensor and configured to determine a multipath signal based on the time of flight of the light signal and the position along the line-image sensor at which the line-image sensor received the given reflected light signal.

Abstract: Systems and methods for stabilizing the steering and throttle of a radio-controlled (RC) vehicle are described herein. More specifically, sensors and circuitry are configured to control the wheel speed and wheel direction of a RC vehicle based on rotational information. In operation, one or more sensors may be configured to receive angular rotational information associated with a rotation of the RC vehicle. The rotational information may define a rotation of the RC vehicle around one or more axes of the RC vehicle. The circuitry may be configured to receive the angular rotation information associated with the rotation of the RC vehicle from the one or more sensors, and control a wheel speed and/or a wheel direction of at least one wheel of the RC vehicle based at least in part on (i) command data received from a controller associated with the RC vehicle and (ii) the received angular rotation information.

Abstract: A method and apparatus are provided for performing photoacoustic tomography with respect to a sample that receives a pulse of excitation electromagnetic radiation and generates an acoustic field in response to said pulse. One embodiment provides an apparatus comprising an acoustically sensitive surface, wherein the acoustic field generated in response to said pulse is incident upon said acoustically sensitive surface to form a signal. The apparatus further comprises a source for directing an interrogation beam of electromagnetic radiation onto said acoustically sensitive surface so as to be modulated by the signal; means for applying a sensitivity pattern to the interrogation beam; and a read-out system for receiving the interrogation beam from the acoustically sensitive surface and for determining a value representing a spatial integral of the signal across the acoustically sensitive surface, wherein said spatial integral is weighted by the applied sensitivity pattern.

Abstract: An example vehicle includes a rotational force control system (RFCS) coupled to a vehicle chassis. The RFCS includes a frame and a first flywheel mechanically coupled to the frame. The first flywheel is configured to spin about a first axis of the first flywheel and tilt about a second axis of the first flywheel. The example vehicle further includes a second flywheel mechanically coupled to the frame. The second flywheel is configured to spin about a first axis of the second flywheel and tilt about a second axis of the second flywheel. The RFCS is configured to cause a rotational force to be applied about at least one axis of the vehicle by changing an angular momentum of the first or second flywheels.

Abstract: An example vehicle includes a rotational force control system (RFCS) coupled to a vehicle chassis. The RFCS includes a frame and a first flywheel mechanically coupled to the frame. The first flywheel is configured to spin about a first axis of the first flywheel and tilt about a second axis of the first flywheel. The example vehicle further includes a second flywheel mechanically coupled to the frame. The second flywheel is configured to spin about a first axis of the second flywheel and tilt about a second axis of the second flywheel. The RFCS is configured to cause a rotational force to be applied about at least one axis of the vehicle by changing an angular momentum of the first or second flywheels.

Abstract: A scatterer gatherer method and device configured to remotely manipulate an apparatus. The scatterer sends a group of identical packets through a network. The route each packet takes through the network is determined by the network. The time taken for a first packet of a group to travel from origin to destination is unequal from that taken by a second packet of the group. A gatherer is configured to receive each packet, determine which is the first of the group of identical packets to arrive, store the first and discard the later arriving packets of the group. The gatherer further configured to interpolate to determine a value for a missing group of packets should none of the group arrives within a predetermined time. The method and device further configured to use the stored data to remotely manipulate an apparatus then provide feedback to the user through a return network path.

Abstract: Systems and methods for stabilizing the steering and throttle of a radio-controlled (RC) vehicle are described herein. More specifically, sensors and circuitry are configured to control the wheel speed and wheel direction of a RC vehicle based on rotational information. In operation, one or more sensors may be configured to receive angular rotational information associated with a rotation of the RC vehicle. The rotational information may define a rotation of the RC vehicle around one or more axes of the RC vehicle. The circuitry may be configured to receive the angular rotation information associated with the rotation of the RC vehicle from the one or more sensors, and control a wheel speed and/or a wheel direction of at least one wheel of the RC vehicle based at least in part on (i) command data received from a controller associated with the RC vehicle and (ii) the received angular rotation information.

Abstract: An apparatus for a semiconductor-package includes a semiconductor device having a radio frequency (RF) input or output, an antenna pad, and a package structured to house the semiconductor device and the antenna pad. The antenna pad may be coupled to the radio frequency (RF) input or output, and the antenna pad is structured to reduce the inductance of the package. The antenna pad may include a pad disposed above the semiconductor device, a pad disposed to a side of the semiconductor device, or an antenna chip. An antenna may be coupled to the antenna pad. The antenna may include a trace antenna, a staggered antenna, or a helical antenna.